Ventilator device and creosote



July 17, 1934. e. MOSER VENTILATOR DEVICE AND CREOSOTE PREVENTER Filed April 26, 1933 .llli. 1 llllll v will?! y'lllr'l llllll 5141 I v I llll Imzenlor Patented July 17, 1934 UNITED STATES VENTILATOR DEVICE AND CREOSOTE PREVENTEE Gottlieb Moser, Sumner, Iowa Application April 26, 1933, Serial No. 668,108

1 Claim.

The present invention relates to a ventilator device and creosote preventer for stoves and the like and has for its object to provide means whereby the draft of the chimney pipe may be utilized in sucking up cold air from adjacent the floor in a uniform manner regardless as to the variation of the draft in the stove or chimney pipe.

Another very important object of the invention resides in the provi ion of an apparatus of this nature which is simple in its construction, inexpensive to manufacture, fairly efficient and reliable in use and operation and otherwise well adapted to the purpose for which it is designed.

With the above and numerous other objects in view as will appear as the description proceeds, the invention consists in certain novel features of construction, and in the combination and arrangement of parts as will be hereinafter more fully described and claimed.

In the drawing:

Figure 1 is a vertical section through the apparatus,

Figure 2 is a top plan View of the draft control sleeve, showing the automatic damper therein,

Figure 3 is a sectional view therethrough taken substantially on the line 3-3 of Figure 2.

Referring to the drawing in detail, it will be seen that the numeral 1 denotes a stove or range of any kind from which rises the stove pipe 2 having mounted therein a damper 3 which will close nearly air-tight. This damper is mounted in the first joint of the stove pipe 2, adjacent the upper end thereof. A T pipe section 4 rises from the pipe section 2 and has connected therewith an elbow section 5 from which depends pipe 6. The sections 2, a, 5 and 6 are all of practically the same diameter. In the upper portion of the pipe 6 is mounted a damper that will close nearly air-tight. This damper is to be open always except for heating an oven for baking purposes and the like. An extension sleeve 8 is telescoped into the lower end of the section 6. A sleeve 10 fits in the lower end of the extension sleeve 8. The extension sleeve 8 is adjusted so that the lower end of the sleeve 10 is about 3 inches from the floor. A bracket 11 is fixed to the sleeve 10 and to the stove.

A pin 12 extends across one side of the sleeve 10. A concavo-convex damper 14. has sleeves 15 rockable on this pin. A stop lever 16 is fixed to the damper and is abuttable with a felt bumper 1'7 fixed in the sleeve 10. This damper 14 must be a little heavier than the stop lever so it will drop down when the draft releases it, as in the dotted line position in Figure 3. When this damper is raised, it must extend two-thirds of the way across the sleeve and must be curved for when it hangs down from the pin, the draft through the pipe will get a hold of it and raise it automatically when the draft gets strong enough and will keep it raised as long as the wind blows and makes a strong draft, and then open it when the wind stops and reduces the draft. This prevents a draft over the floor when the wind is blowing hard and yet it will draw the cold air off from the floor and when the wind goes down and the automatic damper opens, it will still take the cold air off from the floor and allow enough draft to pass up through the pipe to prevent the accumulation of moisture in the pipe and chimney, which causes creosote to run down the pipe and drip on the floor. As Will be understood, the damper 14 does not entirely close the pipe section 10, when in raised position, but simply reduces the suction in this pipe section when a strong draft has been created in the chimney by a strong wind. Thus the damper 14 acts to automatically control the amount of air drawn from the lower part of a room into the pipe 6 by the draft in the chimney and prevents drafts across the floor to the pipe 6 when a strong wind is blowing, and by having the device connected with the chimney pipe on the chimney side of the damper 3, the device will not interfere with the draft of the stove. The device is mainly intended for use on stoves using oil burners which often produce creosote when the flame is low and the drafts nearly cut off.

It is thought that the construction, operation, utility and advantages of this invention will now be clearly understood by those skilled in this art without a more detailed description thereof.

The present embodiment of the invention has been described in considerable detail merely for the purposes of exemplification, since in actual practice it attains the features of advantage enumerated as desirable in the statement of the invention and the above description.

It will be apparent that changes in the details of construction, and in the combination and arrangement of parts may be resorted to With out departing from the spirit or scope of the invention as hereinafter claimed or sacrificing any of its advantages.

Having thus described my invention, what I claim as new is:

In combination with a stove and its chimney pipe having a control damper therein, a pipe connected with the chimney pipe on the chimney side of the damper and extending to a point adjacent the bottom of the stove, and an automatic damper in the lower part of said pipe normally held open under the action of gravity, but being raised more or less to partly closed position by an increase of the chimney draft to automatically regulate the amount of air drawn into the pipe from the room in accordance with said chimney draft. GOTTLIEB MOSER. 

